And joseph bobebts



2 Sheets-Sheet l llllllllll Dec.V 22l 1925 w. G. R. BRAEMERETAL METHOD AND MEANS FOR DRYING TEXTIL IAA'IIEIRIAL Filed Deo. 1o. 1924 W. G. R. .BRAEMER ET AL' METHOD AND MEANS FOR DRYING TEXTILE MATERIAL Dec. 22 1925. 1,566,644

Filed Dec, 1o. 1924 2 sheets-sheet, 2

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UNITED STATES PATErVr oFFlcE.

WILLIAM G. R. BBAEIEB, F IIDDONIIELD, NEW JERSEY, AND JOSEPH ROBERTS, Ol' -lv PROVIDENCE, RHODE ISLAND, ABSIGNOBS TO GENERAL FIRE EXTINGUISHEB COI- PAN Y, A CORPORATION Ol' YORK.

IETHOD AND FOB DBIYING TEXTILE MATERIAL.

niet December 10, 1924. Serial No. 754,889.

To all 'whom it may concern.'

Be it known that we, WYILLrAM G. R. BILAEMER and JosEPHfRonnaTs, both citizens of the United States, and residents of Haddonfield, county of Camden, State of `New Jersey, and Providence, county of Providence, State of Rhode Island, respectively, have invented an Improvement in Methods and iMeans for Drying Textile Material, of which the following is a specification.. y

An object of our invention is to provide an automatic dryer for warps and, more particularly, for mercerized cotton warps whereby the same may be given ltwo passages through the drying chamber with the result that for a given time of treatment and speed of movement 'of the arn, the drying chamber may be greatly re uced in length than. would otherwise be required.

Our'objectis also to so automatically aply yarns in looped condition over traveling vpoles that very great len hs of yarn are possible of treatment in a rying chamber of limited size and the looped yarn so provided and fed through the drying chamt ber will provide air spaces between the suspended yarn carried by the poles forpermitting ready `access and circulation of the cross currents of heated air to insure a speedy and perfect drying of the materials.

Our invention also has for its object a circulation of the heated drying medium, such as air, in a helical course'along the length of the drying chamber from the discharge endtoward the intake end and, at the same time, introducing fresh air gradually into the circulation at the discharge end and permittin the escape of moist air from the intake en and so guiding the yarn-through the drying chamber in which such air circulates as to induce a duplicate treatment of the yarn with the same general air con-- ditions: that is to say, the `relatively dry and fresh air is caused to act upon the yarn, in the final drying operation upon it, before it leaves the dryer and also to vact upon that portion of the yarn intermediate of the length thereof which is under .drying operation 'withinthe drying chamber, and, similarly, causing the most moist air to be moved in contact' with the 'incoming wet`warps and also in connectionA with the treatment of the warp's where they enter the dryingA chamylirst instance.

vtudinal vertical partition 7 into a ber to make the second passage therethrou h.

A rther object of our invention is to 4 second drying treatment and while passing through substantially the same currents of drying air to which it was subjected in the With the above and other objects in view, the nature of which, will be more fully understood from the description hereinafter, the invention consists in the novel method of drying and construction of drying apparatus, as hereinafter more fully described and delined in the claims.

Referring to the drawings: Fig. 1 is a side elevation ofrour improved drying apparatus; Fig. 2'is a with a portion lof the casing broken open; Fig. 3 is a' transverse section of the same, taken'on line 3 3 of Fig. 1; Fig. 4 is a perspective view illustrating one of`v the poles and portion of the chains constituting the conveyor means; and Fig. 5 is aperspective view on a small scale showing the baille plate employed in the drying chamber.

The general casin is made' up of channel iron structures 2 f1 led in with yinsulating Wall sections .3 which permit of ready removal to provide convenient access to the interior when necessary. Any other form of building up thev compartment .or casing structure may be employed in vlieu of that shown.

The general casing'is divided by av longidrying compartment 5 and heating compartment 6 through the former of which the yarns or textile'material are caused to travel and in the latter .of which are provided." heating coils -for heating the circulating drying plan view of the same,

medium. AFurthermore lthe heating chamber l and drying chamber are in substantially conltlnuous communication at their lower-parts at 8 and are also communication alo their upper parts vby tubular passages 10 in which revolving circulating fans`11 are arthere are a series that the air is, in versely at all places tact with the heated division wall. vA simi-l be arranged along the outer osite side of the drying c as indicated at 7", if so desired.

ar construction shown, the for the warps constituting erial to be dried `consists of 7 guided at an operating level about chain wheels 18 and at a return level about guide w are driven in any sui .erably as he the chains 17 are bars or poles 18 of suitable c your preferred construction, bars are formed vof la metallic 18 connected at its ends to the respective chains and having secured to its flanged part a transverse wooden bar 18", as is more fully The wooden bar preferably eyond the metallic T- the warps Y are hung n spaced apart warps to hang in as isv indicated in' the same time to allow free the heated air about the warps. during the drying operation.

he functioning o ed and driven by means of rotating sha ts 12. As indicated in Figs. 1

of these .circulating fans so eect, 'circulated transalong the length of the to ow upwardly. ating coils 15 in the heating ansversely into the upchamber 5, thence d chamber and over dried, and thence horiassa'ge 8 into the botamber fo y, re-circulaof the drying chamber 'tudinal baffleplate part curved in adirec' of the fans and said transverse bars 14 the compartment and susd from the casing. The is baille plate 13 is shown ig. 5. This bali'le plate and causes them. respectively lar guide may Wall at the opp In theparticul conveying mea the textile mat through the two endless chains 1 chamber 6, thence tr per part .of the dr ing downwardly throng the materials to be zontally throughthe -tom` of the heating c tion. The upperpart ovided with a. lon 13 having. its upper tion toward the center baiile plate suppo .extending across tained at each en general shape ofth on a small scale in F 13`divides the air currents deflected downward,

5al to the textile material as gh the drying chamber b to the same material through the dryfurthermore, equal body of air l in each of the it'will be noted that baille plate is sli htly f the axis of the'fan s afts f heated air which ing its first These chains table manner, but prefdescribed. The links of connected by transverse onstlruction. I

each of these T shaped bar shown in Fig. 4. extends slightly b shaped member and over bars of this constructio ysuiiiciently to allow the looped or festo Fig. 1, and a circulation of through passage oned form,

' asses first throu through-passage 5 when it repeats its passage ing chamber. insures a substantially reaching the texti f'the machine, avels in the direction indiit conveys the f rying operat The baille plate,

they conveyor tr cated by the arrow, thatis, warps during the d left to right, in Fig. ation, the air is ing chamber an cated by thel arrows inlation being induced b fans11. As the air moisture from the 'wet war s being introduced into the 'drying cham er, it is neceshe circulating air, when it st, to escape from the drythe atmosphere and, at the f an equivav The dry air take passage 19 r end of the labove the level o 12, so that the volume o sses to the textile material dur h the drying chamber is somean the volume of heated air to the textile material when cond time through the drying t; which time it is much dryer than. during the `first passage.

The lower part 4 rtly closed by a horiz ich extends horizontally from wall for about three-quarters o of the drying chamb ingplate per the air passing tile material to flow tow chamber most distant chamber as indicated by the arrows, and

downward through the passe baille plate 9 into the lower f the heating chamber 6 below the n. In this manner, g medium is caused the textile material ou'gh the drying chamber in a more orfless uniform manner.

A wooden guide 7' division wall 7 and proj ther textile material in to prevent the same from riding ting poles and coming in conlated through the dryd heatingI chamber, as indi- Fig. 3, said 'circuthe action vof the what .greater th ecomes laden with that is delivered passing the se chamber and a sary to permit t becomes verymoi ing chamber into 'same time, to permit an inflow o lent quantity of -fresh dry is admit-ted through an in nt to the delivery end of the machine' of air admitted may be d y a s iding damper 20, as shown v1. vThe moist air is per through an outlet 21'contr sliding damper 22 arranged at t end of the drying-.chamber .and p art thereof; In thismanner, rstood that during the trans ulation of the air, as indicated` in aping moist air from' the outcorresponding inflow of Ifresh inlet 19, will induce the cirder the influence of the fans that'is to say, g air being displaced by a flow of fresh air will cause .air within the drying and` s to pass gradually from of the drying chamber is ontal baille plate 9 the division f the width er, said baille or deflectthe function' of causingY downward through the texard the side of the from the heating thence passi at the upper eating coils 15 -therei heated air'as the dryin tofully circul as it passes thr Fig. 3, the -esc let 21 and the dry air by the culating-air un to travel in a spiral course; that the escapin corresponding in the dual body of heating chamber ged along the ecting toward the the drying ofi the suppor the delivery end of the machine to the in- -medium, due to the elimination of moist air and an equivalent reception lof dry air, should not be Vgreater than is sufficient to insure the thorough drying of the warps in passing twice. through the machine. This 1s, of course, governed somewhat by the speed of travel of the conveyor means through the drying chamber and the extent f of moisture lwhichis carried into thema- -v [and having its ,y ratus, the warps Y yand between guidin chine by the warps.

Considering now the means shown for feeding the warps to the conveyor and delivering them from the conveyor, together with the means for re-transferring the warps to the conveyor for the secondary treatment, the followin instrumentalities are employed. At t 1e receiving end o,f theappapass over a guide roller Y pins 26 by which they are properly space apart. The warps then ass between feeding rolls 27 and 28 (whic are eared together t 29) and which positively raw the warps over the roller 25 and deliver them downward in a looped condition overthe transverse bars 18 of 'the conveyor 17. As the warps are fed downward frolii the feed rollers, they pass through a slot 24 inthe top of a com artment extension 23 to the end of the rying chamber, as will be understood by referenceto Fig. 1. The depth of the loops or fest'oons formed by the warps'is regu ated by the speed of the feed rolls y27 and 28,' as compared with the speed of travel of the conveyor, andl hence the said length or depth of the .warp

loops may be given any pro ortion desired. At the delivery end, the wariis Y are drawn upward throughan aperture 31 in. the top of a compartment extension 30 at the delivery end of the-drying chamber, and said yarns rise to`an elevation. above the general casing of the apparatusand then pass horizontally overa guide roller 37. These warp threads arel then passed between ide pins 381 and thence over a series of orizontal v guide rollers 39 supported by a longitudinal.

rame 43 resting' uponthe top ofthe casing irection of length arranged diagonally, so that its delivery end "is brought to the position which is out of-aline mentv with the intake end of the dryingv chamber,.previously described. The warps are guided between further spacing pins 42, and thence between and about feed rolls 4() and 41 geared together at 43, and whereby the warps pass downwardly as in the rst case through the transverse slot 24 of the compartment extension 23, by which the warps are delivered to the transverse bars 18 of the conveyor 17, in loops or festoons, and -to one side of the looped' warps which are delivered to the conveyor by the feed rolls 27 and 28, as previously described. When the conveyor is provided with two sets of looped warps, they are arranged side by side, as indicated at Y and Y2 in Fig. 3,

so that the total width of the drying chamber is substantially filled' by the warps. After the warps are subjected to the drying operation and are to be delivered finally from the drying chamber, they are drawn upward from the compartment chamber 30 through the transverse slot 31 therein, thence guided over the roller 32 and delivered from the'machine by the feed rollers 33 and 34 which are geared together at 35.

lVe do not confine lourselves to any particular driving mechanism for operating the feed rolls 27 and 28, 40 and 41, and 33 and-34, as they may be driven in -any suitable manner. We have shown, however, thepfollo'wing manner of driving the said rolls. 58 is.

a longitudinal shaft extending for the full length of the drying chamber and said: shaft .drive the feed rolls 33 and 34. At the other endl thel shaft is provided with bevel gears 60 for driving the feed rolls 27 and 28. The feed rolls 40 and 41 are driven by a sprocket chain transmission 61 arranged between the shafts of the rollers 28 and 40. It is manifest that the feeding speeds of all of the ris geared at one end, by bevel gears, 59 to threel sets of driving rolls should be the samef.

The shaft 58may be directly driven by any suitable power, but, as shown, it is operated by a transverse shaft 54 having its' end geared to shaft 58 by bevel gearing 57.' This shaft 54 operates through suitableworm and worm wheel gea-ring 55 to drive a vertical shaft 56,' said vertical shaft operating through worm and worm wheel gearing 36 to drive the conveyor 17, so that the speed ofthe conveyor has a certain definite relation to the speed ofthe feeding rolls. The

shaft 54 is provided with a belt pulley 53 ,A f

which is driven by a belt 52 from -the pulley 51*L of the variable lspeed transmission device 51, the same being driven by a belt 49 receiving power through a driving pulley 48 and transmitting it tothe variable speed transmission device hymeans of a fast and loose pulley 50. By shift-ing of the belt 49, the feeding'of the conveyor and war s-may be stopped at any timev while permitting the fans to continue in operation, ifl so desired.

A suitable variator or speed control means performing the function of the device 514 is set out, by way` of example, in Letters Patent No. 1,377,593, and reference is made thereto as showing an example of a suitable mechanism. We, however, do not limit ourselves as to the means for varying the speed drive the remaining shafts 12 of the otherl fans. In this manner, all of the fans 11 are rotated at the same speeds and these speeds may remain constant while, throu h the 'variator 51, the speed of travel of t e conveyor and warps may be increased or decreased, as desired. y

In" the carrying out of the method of. dryi ing performed by this apparatus,it is seen passage that the wet warp is partly dried in its rst through the closed drying chamber and then, posed to the outside atmosphere to reduce the extent of its moisture and to permit it to be returned to the conveyor wherebyv it is :ted through the closed drying chamber a second time for the completion of the drying operation. During this operation, it is observed that in the parallel passage of the warps inthe two instances through the drying chamber, they are 'in each ca se being gradually dried, but, in the first passage, the warps contain greater moisture than in the second passa-ge; and as therewould be a tendency of the heatedy air to more readily circulate through the dryer ortions of the warp-.provided bythe secon passage of it through the drying chamber this is guard-2 ed against by the use of the deiector or baie plate 13 which positively insures approximatel half, and preferably slight y more than alf, ofthe circulating air to pass downward over the warps containing the Y' most moisture and constitutingthose in the rst passage through the drying chamber. Wehave described our improved method Aand means in that particularity which we deem to be the best exposition of our invention and that whichwe prefer in commercial practice, butwe do not restrict or confine ourselves to the minor or secondary .detai'ls, as such are susceptible of modiiication and which mayT be resorted to as matters of mechanical skill and without aideparture from the spirit of` the invention.

Having now described our invention, what we claim asA new and desire to secure by Letters Patent is: 1

1. In a drying apparatus, the combination of a casing having a dry-ing chamber pro-4 vided with inlets at one end and outletsat lin the heated condition, it is ex-v the other end for yarn or other material being dried and av heating chamber parallel to the drying chamber andin communication with the bottom portion thereof, heating coils arranged inthe heating chamber for-gheating the circulating air, a plurality of vcirculating fans arranged at intervals along the length of the chambers to provide a plurality of transversely circulating means for causing the currents of air to circulate successively through the drying chamber and heating chamber, means for conve ing the yarn or other material to be ried lengthwise through the drying chamber, two sets of means for feeding the yarn or other material into the intake end of the drying chamber at different places ltransversely situated, and two separate means for. delivering the treated yarn or other material from the outlet end of the drying chamber and at different places transversely situated, whereby the yarn or other material being dried is passed through the apparatus in two stages and thereby receives two consecutive drying treatments, the .means for delivering the yarn -or other material after it leaves the drying chamber in the first stage or passage therethrough of the dryin operation being constructed for feeding the yarn or other material to the intake end of the drying chamber preliminary the drying treatment thereof.

to thesecond stage of 2. The invention according to claim 1,

wherein the means for delivering the yarn to the means for feeding it into thev intake end of the drying chamber in the second stage of the drying treatment, comprises diagonal guide means for insuring the delivery of the yarn or other material into the drying chamber for the second stage of the treatment to one side of the same yarn as it is fed into the drying chamber in the first stage of the drying treatment', whereby the preliminary feeding of the yarn into the d vingy chamber and its inal delivery thererfiomv take lace at places out of direct alinement. 3. he invention according to claim 1, wherein further, the casing is'provided at its delivery end with avvalve controlled air inl take for permitting fresh dry air .to enter.

into the circulation within the casing, and

n '7 moving the. excess of `moisture is 1knated from the interior o t e drying chamer.

chamber for permitting theescap'ev in a direction from-the outlet end `to the inlet end of the drying chamber and adually elimi- 1 4. The invention according to claim 1.,`

wherein further,.power means are provided guiding means for the conveyor means for the yarn, and a laterally extending guide board carried by-the vertical wall. at a distance below the conveyor means upon which the yarn is supported whereby said yarn is maintained at a delinite distance away from the wall during its passage through the drying chamber.

6. The invention according to claim l, wherein the fans are arranged for forcing the air into the upper part of the drying chamber and above the conveyor means for the yarn, said upper part of the drying chamber provided with a curved batiie plate extending longitudinally\v of the dr ing chamber for dividin the air' currents rom the fans into two bo ies and being separately directed downward, one body of circulating air being projected downward upon the yarn durin the first sta e of the drying operation an the second ody of circulating air being directed downward upon the yarn ther, the lower -ber irovided with a lon 4 E from the Aduring the second sta'ge of the drying operation.

7. The invention according to claim 1,` wherein further, the upper portion of the.

chamber is provided with a longitua' y arranged and transversely curvedl baille with its curved end directed toward the fans for dividing the air currents into two circulating bodies of air and causing them to be projected downward, and wherein fur- 'tudinal horizontal b e plate extending om the division wall between the drying chamber and heating chamber but part way across the drying chamber and for a lower circulatingeating chamber be therein.

8. The invention according tof claim l, wherein them'eans-for delivering the yarn from the delivery end of the rst stage of the treatment to theintake end of the second Astage 'of the treatment comprises .guiding means arranged above the top. of the drying chamber. v9. The invention according to claim v1,

ow the heating coils wherein the means for delivering the yarn two stages of the drying opportion of the drying cham..

ing `,chamber into the from the delivery end of the first stage of the treatment to the intake end of the second stage of the treatment comprises guid-V ing means 'arranged above the top of the drying chamber, said means comprising a plurality of guide rolls arranged diagonally,

andaplurality of guides ateach end of said guiding meansffor guiding the warps and keepin them separated from each other.

10. 'ghe invention according to claim 1, wherein the means for conveying the yarn through the dryingv chamber comprises apairof endless chains having transverse looped in festoons, and feeding and disand delivery ends of the drying chamber with" transverse openings. atithe top. for the .connecting bars over which the yarn is Y chargin chambers are provided at theinlet i" `the conveyor at the other end, and connectv ing means whereby the speedof delivery andy i removal of the yarn is timed in respect to the speed of travel of the conve or whereby the yarn will be uniformly distributed alongl the conveyor between the feeding and discharge chambers. i

11. The herein described method of drying textile material in long lengths, which consists in producing within a long drying chamber transverse currents of heated air by the recirculation of the air content of the drying chamber and at the same time slowly advancing the heated body of air through the dr ing chamber from the delivery end to the. intake end and'controlling the speed of movement of the air longitudinallyof the dryin tinuously supplying fregi dry air in colitrolled uantitie'sat one end ,of/the circulating air of the air body, and durin the said recirculation of the heated air ody causing the textile material to be dried to be fed through lthe circulating' heated air body in a direction contrary to the direction of lon 'tudinal travel of the latter through the rying chamber to produce a preliminary drying of the material and thereafter returning the textile material so .dried and causing lsaid chamber by condy and removing a corresponding amount of moist air from the opposite end l iio i material to again pass through the circu-A 'lating-heated-air in a direction contrary to .the longitudinal travel of the passing Athrough the drying chamber ,are

caused to-be suspended in festoonI form and.

the warps in substantially separated condition, Aand wherein also the warps inthe Warps simultaneously passing through 10 beingfed a second tiine through the drying under their first treatment.4 A chamber-are caused to pass from the de- In testimony of which invention, I hereliveryv end of the drying chamber in a diunto set my hand. Y

agonal direction outside of said chamber to WILLIAM G. R. BRAEMER.

the intake end thereof for a second treat'-` ment, and wherein further, the Warps in In testiomny of which invention', I herepassing through the drying chamber in the unto set my hand.

second treatment are kept separate from JOSEPH ROBERTS. 

